Engineers get any number of different jobs. They can be involved in pure or applied research, planning, production, testing, procurement, maintenance, construction etc. in just about any company. Research engineers undertake detailed studies to develop and improve materials, products, techniques and processes. Design engineers prepare designs for the construction of machines, products and structures. Production engineers oversee the manufacture of raw materials into finished products. Test engineers determine life, wear and strength of materials and parts. Procurement engineers purchase materials, parts, supplies and service. Construction engineers direct the assembly and installation of structures such as water treatment plants. Computer design engineers design and build software, and produce and maintain equipment.